Western Digital announces the first 4TB portable drive that uses Thunderbolt. The new compact external drive is bus-powered and uses two internal drive for the combined storage space of either 2TB or 4TB for the costs of $299.99 and $429.99, respectively.

It's not the fastest NAS, nor does it include many advanced features, but the WD My Cloud EX4 still combines great ease of use into an affordable personal cloud system that's excellent for a connected home.